Very nice game, i like the cute graphics, the only thing I can say is that sometimes clicking the pencil to start doesn't seem to work very well (but maybe thats just my thumb!) and it would be nice to have some instruction it took me a few seconds to realise that I need to tap the pencil to start so maybe a message of tap me to start or something like that in the nice doodle style that you have going on .
Cheers